Improved composition for roofing



J. W. BARTLETT.

Straw Cutter.

Patented Oct. 23, 1866.

m W Z UNITED STATES PATENT OFFICE.

JOHN W. BARTLETT,

OF HARMAR, OHIO.

lM PROVEMENT IN STRAW-CUTTERS.

Specification forming part of Letters Patent No. 58,974, dated October 23, 1866; antedatcd October 1'2, 1566.

To all whom it may concern Be it known that I, Join: W. BARTLETT, of Harmar, in the county of \Vashington and State of Ohio, have invented new and useful Improvements in Straw-Cutters; and I do hereby declare that the following is a full and clear description of the construction and operation of the same. reference being bad to the annexed drawings, making a part of this specification, in which- Figure 1 is a perspective view of my cutter. Fig. 2 is a transverscd section, showing the mouth and position of knife attached to yokecrank and lever. Fig. 3 is a view of the pawllcver as attached to holder. Fig. 4 is a dc tached view of part of the feed-box, showing the adjustable throat and the mode of adjusting it automatically.

A represents main body or box; 13, iron front or frame, forming month 022. O is the knife; D, knii'elever. E is the arm to which the knife-lever is hnn g. I is a guide fastened to arm E, to guide and hold the knife to its place at rear end. F is the yoke-crank, to which the other end of theknife is suspended. G is a little crank on main crank-shaft, for moving the feed apparatus. H is the pawllever. I is pawl-holder and guide. J is a catch-wheel on lower feed-roller. K is a feedroller, filled with little teeth. L is also a feedroller, made smooth, and held against the lower roller by little springs on top of the box, and bearing on little followers at each end of said roller. P is a little pitman, attached to end of pawl-lever H and the little crank G, before mentioned. It is a pin passing through aforesaid pawl-holder I and pawl-lever H, on which the said lever moves. S is the pawl. T is the fly-wheel; U, the handle.

In order to enable mechanics more fully to understand my cutter, I will explain it further. The main frame or front is made of metal, in any convenient shape, with a mouth formed at upper end. There are flanges at upper end for fastening to a main box, made in the usual form, with bottom and sides. On one side of mouth formed on said frame are suitable bearings for a crank-shaft, so that the crank will bring the edge of the knife close up to the mouths edge. On the other side an arm or standard is formed, extending up above the top of the box, at the upper end of which a lever is suspended by a bolt or pin. To this lever the rear end of the knife is hung, so that when the crank at the other end of the knife is turned down the said lever brings that end of theknife down on a level line a little below the lower edge of the mouth. \Vhcn the said crank is turned up the said lever swings out and upward, and brings the knife up to the upper edge of the month.

On the crank-shaft, at rear end, is a little crank, nearly at right angles with main yokecrank. To this crank a small pitman is attached by a small wrist. The other end of said pitman is attached to pawl-lever. The said mentioned pawl lever is pivoted to a holder near the center, and has a pawl hinged to the upper end, so as to work easily. The said holder is screwed fast to the side of the box, and a portion drops in a circular form below the bottom of the box. and hose. slot in the forward end, in which the pawl-lever works to keep it to its place. The pawl rests on and works in a notched wheel on the end of under feed-roller shaft. The upper roller is held to the lower by two small springs on top of box on followers. The before-mentioned flywheel is fastened on the end of crank-shaft, so as to stand oif from the front of the box. This fly-wheel has a handle fastened to it for turning it.

The operation is as follows: Motion is given to the fly-wheel by handle U. The knife C is put into a swinging or draw motion by the action of crank F and lever D, the crank carrying the forward en d round its circuit, and the lever D, swinging downward, causes the knife to sweep across the mouth from top to bottom, so as to out easily everything before its edge. When the knife is raised to its utmost height the little crank G on main crankshaft movcs the pawl-arm, so as to roll the feed-roller and push the material to be cut through the mouth. Thus, as the motion is continued, the feeding and cutting are pen formed with case and great rapidity.

In Fig. tis shown the adjustable automatic throat. This consists of a hinged board, 0, attached to the box at its upper end by the rod 1", which turns frecly.- S is a spring, coiled at one end around this rod 1", so that when the straw passes under the lower end of this boaid O it will rise and permit the passage of the straw as fed; but by force of this spring the hinged board will press upon and confine the straw, so that it will be compressed when receiving the action of the knife.

After having thus described in y cutter, what I claim as new, and desire to secure by Letters Patent, is-

1. The arrangement of the fly-wheel, flywheel shaft with two cranks, knife U, oscillating arm .1), and standard and guide 1*, substantially as set forth.

2. The combination of the crank l, attached to the end of the flywheel shaft, the lever l,

and the bent pawl-lever H with the ratchetwheel and feed-rollers, substantially as set forth.

3. The pawlholder and guide I, constructed and eonneeted substantially as set forth.

4. The hinged board 0, with its shaft P, in combination with the bent spring S, substantially as and for the purpose set forth.

JUIIN \V. BARTLETT.

Witnesses:

GEORGE JENVEY, I. I. PARKER. 

